D provides the binary arithmetic operators that are described in the following table for use in your programs. These operators all have the same meaning for integers that they do in ANSI C.
Table 2.7 Binary Arithmetic Operators
Operator | Description |
---|---|
| Integer addition |
| Integer subtraction |
| Integer multiplication |
| Integer division |
| Integer modulus |
Arithmetic in D may only be performed on integer operands or on pointers. See Section 2.10, “Pointers and Scalar Arrays”. Arithmetic may not be performed on floating-point operands in D programs. The DTrace execution environment does not take any action on integer overflow or underflow. You must specifically check for these conditions in situations where overflow and underflow can occur.
However, the DTrace execution environment does automatically
check for and report division by zero errors resulting from
improper use of the /
and
%
operators. If a D program executes an
invalid division operation, DTrace automatically disables the
affected instrumentation and reports the error. Errors that are
detected by DTrace have no effect on other DTrace users or on
the operating system kernel. You therefore do not need to be
concerned about causing any damage if your D program
inadvertently contains one of these errors.
In addition to these binary operators, the +
and -
operators can also be used as unary
operators as well, and these operators have higher precedence
than any of the binary arithmetic operators. The order of
precedence and associativity properties for all of the D
operators is presented in
Table 2.12, “D Operator Precedence and Associativity”. You can control
precedence by grouping expressions in parentheses
(()
).